Whether you go "organic," "hormone-free" or choose other other "-free" foods, know what you're purchasing. Know what "organic" means (and seek guidance from reliable sources, such as the U.S.D.A.) AARP offers an easy-to-understand definition:

organic standards prohibit use of most
conventional pesticides,
irradiation, sewage sludge, synthetic fertilizers and genetically
modified materials, while animals must be given no antibiotics or growth
hormones.

Milk — Consider milk from dairy cows not fed rBST, a manufactured hormone that boosts milk production. While there's no solid evidence that rBST causes cancer in humans, it does cause udder infection in cows — which, in turn, are treated with antibiotics — which, in turn, are passed on to the human drinker. If you're trying to avoid antibiotics in your food, keep this in mind.